Legislators banned the devices in 2018 and created the buyback program at the same time, but left it unfunded. The measure Inslee signed Thursday made $150,000 available to the Washington State Patrol (WSP) to compensate residents who voluntarily turn in bump stock devices.

The program allows residents to turn in up to five bump stocks and receive $150 apiece before a federal law banning the devices takes effect on March 26. Residents can exchange bump stocks for a voucher from 10 a.m. until 4 p.m. on March 17-18 and March 24-25 at any WSP office listed at the bottom of this article.

Individuals can also turn their devices into the Bureau of Alcohol, Tobacco, Firearms and Explosives or any other law enforcement agency and receive a written receipt. Those receipts can be turned into the WSP for a program voucher.

Once the voucher is processed, the WSP will mail residents a check for $150 for each device turned in. No checks will be issued on the day residents turn in their bump stock, and vouchers will be issued on a first-come, first serve bases.

Washington's 2018 ban came in the wake of a 2017 Las Vegas mass shooting in which gunman Stephen Paddock used weapons including 14 rifles modified with bump stocks to fire over 1,000 shots into a music festival crowd there in 2017, killing 58 and wounding 413 in only 11 minutes.